Use elements/types.dart in codegen.dart

pkg/compiler/lib/src/ssa/graph_builder.dart

Index: pkg/compiler/lib/src/ssa/graph_builder.dart
diff --git a/pkg/compiler/lib/src/ssa/graph_builder.dart b/pkg/compiler/lib/src/ssa/graph_builder.dart
index f266b55e3a08da71de6f73dc780265222dded010..23cd44769a860032bc750ba67da2f3b4e66e59b3 100644
--- a/pkg/compiler/lib/src/ssa/graph_builder.dart
+++ b/pkg/compiler/lib/src/ssa/graph_builder.dart
@@ -223,14 +223,14 @@ abstract class GraphBuilder {
   }
 
   HInstruction callSetRuntimeTypeInfoWithTypeArguments(
-      DartType type, List<HInstruction> rtiInputs, HInstruction newObject) {
+      InterfaceType type, List<HInstruction> rtiInputs, HInstruction newObject) {
     if (!backend.classNeedsRti(type.element)) {
       return newObject;
     }
 
     HInstruction typeInfo = new HTypeInfoExpression(
         TypeInfoExpressionKind.INSTANCE,
-        (type.element as ClassElement).thisType,
+        type.asRaw(),
         rtiInputs,
         closedWorld.commonMasks.dynamicType);
     add(typeInfo);